做DDS时需要用到如三角波，正弦波之类波形的采样数据，这个函数可以产生任意采样点数和任意幅值的正弦波数据点。由该函数产生的数据很容易的转化为.mif文件-Do DDS when needed, such as triangular wave, sine wave like waveform of sampled data, this function can be generated in any sampling points and optionally the amplitude of the sine wave data points. Easily converted to the data generated by the function. Mif file